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Optical Engineering

Continuously tunable microwave photonic filter with multiwavelength optical source
Author(s): Huijuan Li; Zhengrong Tong; Weihua Zhang; Dong Xu
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Paper Abstract

A continuously tunable microwave photonic filter (MPF) with a multiwavelength optical source is proposed and demonstrated. The proposed MPF is based on a broadband optical source (BOS) and a waveshaper, which serves as a programmable slicing optical filter. By programming the waveshaper, a 50-channel stable and flat optical source is realized experimentally. The amplitude and phase of the optical carriers and phase modulation sidebands are then controlled via a Fourier-domain optical processor (FD-OP); phase modulation is changed to single sideband modulation. This filter could also be switched from bandpass to notch filter by controlling FD-OP. As simulation results, the center frequency of the bandpass filter is tuned continuously from 0 to 37.244 GHz in the entire free spectral range (FSR) and this notch filter based on 50 taps has the ability of realizing a narrow-notch, flat-passband, and large FSR response.

Paper Details

Date Published: 4 January 2018
PDF: 5 pages
Opt. Eng. 57(1) 017104 doi: 10.1117/1.OE.57.1.017104
Published in: Optical Engineering Volume 57, Issue 1
Show Author Affiliations
Huijuan Li, Tianjin Univ. of Technology (China)
State Key Lab. of Electronic Thin Films & Integrated Devices (China)
Zhengrong Tong, Tianjin Univ. of Technology (China)
State Key Lab. of Electronic Thin Films & Integrated Devices (China)
Weihua Zhang, Tianjin Univ. of Technology (China)
State Key Lab. of Electronic Thin Films & Integrated Devices (China)
Dong Xu, Tianjin Univ. of Technology (China)
State Key Lab. of Electronic Thin Films & Integrated Devices (China)


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